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joshuanapoli

517 karma · joined May 12, 2010

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joshuanapoli··on MXC - a sandboxed code execution system
If you have a custom agent in a product, then it needs isolation to be sure to protect the customer data.
joshuanapoli··on Ask HN: Who is hiring? (October 2026)
CVector | Software Engineers, Senior Research Engineer | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real time economic optimization and AI prediction to every energy and manufacturing plant. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps, machine learning models and backend systems, shaping tools that directly impact industrial operations and energy reliability. Build AI agent systems that automatically foresee upcoming problems and provide possible solutions.

Full Stack and Backend Software Engineers: We're looking for a passionate Software Engineers comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI) or someone to specialize in our backend infrastructure.

Senior Research Engineer: Candidates should be experienced with machine learning, and analysis using Python.

Reach out to me at jnapoli+hn@cvector.com

joshuanapoli··on Ask HN: How do you manage skills files?
We have some company-managed skills, that help coding agents find the relationships between our repos, and our conventions, architecture, and other high-level decisions. These are supposed to be portable between agents, and so distributing them is currently awkward.

We have a bootstrap script to deploy company-managed skills to each developer's "personal" skills. Hooks for codex and claude code try to refresh the skills on each startup.

joshuanapoli··on Atomarine: Nuclear Data Centers at Sea
I don’t think that anyone would want to steal an icebreaker, but a datacenter full of valuable equipment and interesting information is a more likely target.
joshuanapoli··on Incident with Actions and Pages
I've been thinking of reverting back to Circle CI.
joshuanapoli··on Postmortem: TanStack NPM supply-chain compromise
Does zizmor catch this pull_request_target vs cache poison vulnerability?
joshuanapoli··on I'm going back to writing code by hand
Rewrite following a new architecture plan could get finished pretty quickly, treating the original as a prototype.
joshuanapoli··on Ask HN: Who is hiring? (April 2026)
CVector | Software Engineers, Senior Research Engineer | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real time economic optimization and AI prediction to every energy and manufacturing plant. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps, machine learning models and backend systems, shaping tools that directly impact industrial operations and energy reliability. Build AI agent systems that automatically foresee upcoming problems and provide possible solutions.

CVector recently raised $5M seed, read more on TechCrunch: https://techcrunch.com/2026/01/26/ai-startup-cvector-raises-...

Full Stack and Backend Software Engineers: We're looking for a passionate Software Engineers comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI) or someone to specialize in our backend infrastructure.

Senior Research Engineer: Candidates should be experienced with machine learning, and analysis using Python.

Reach out to me at jnapoli+hn@cvector.com

joshuanapoli··on We rewrote our Rust WASM parser in TypeScript and it got faster
They use a bespoke language to define LLM-generated UI components. I think that this is supposed to prevent exfiltration if the LLM is prompt-injected. In any case, the parser compiles chunks streaming from the LLM to build a live UI. The WASM parser restarted from the beginning upon each chunk received. Fixing this algorithm to work more incrementally (while porting from Rust to TypeScript) improved performance a lot.
joshuanapoli··on Ask HN: Who is hiring? (March 2026)
CVector | Senior Software Engineer – Backend & AI Infra | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real-time economic optimization and AI prediction to every energy and manufacturing plant. We fuse live asset data with market dynamics into one decision layer that continuously forecasts, simulates, and optimizes — so plants run closer to their true economic potential every day. CVector recently raised $5M seed, read more on TechCrunch: https://techcrunch.com/2026/01/26/ai-startup-cvector-raises-...

We're looking for a senior backend engineer to evolve our core platform — time-series data systems, AI-assisted analytics, cloud infrastructure, and data ingestion pipelines. You'll take ownership of complex systems, drive major technical migrations, and shape how intelligence is embedded into industrial energy workflows. Think: AI evals and prompt engineering, MQTT ingestion pipelines, time-series schema design, PostgreSQL infrastructure, and ML platform support.

Stack: Python, TypeScript, Supabase, PostgreSQL, MQTT, TigerData, InfluxDB, AWS. 5+ years experience building production backend systems. FinTech, quantitative analysis, or econometrics background is a strong plus.

$125K–$150K + meaningful equity. Reach out to me at jnapoli+hn@cvector.com

joshuanapoli··on WebMCP is available for early preview
WebMCP should be a really easy way to add some handy automation functionality to your website. This is probably most useful for internal applications.
joshuanapoli··on Ask HN: Who is hiring? (February 2026)
CVector | Software Engineers, Senior Research Engineer | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real time economic optimization and AI prediction to every energy and manufacturing plant. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps, machine learning models and backend systems, shaping tools that directly impact industrial operations and energy reliability. Build AI agent systems that automatically foresee upcoming problems and provide possible solutions.

CVector recently raised $5M seed, read more on TechCrunch: https://techcrunch.com/2026/01/26/ai-startup-cvector-raises-...

Full Stack and Backend Software Engineers: We're looking for a passionate Software Engineers comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI) or someone to specialize in our backend infrastructure.

Senior Research Engineer: Candidates should be experienced with machine learning, and analysis using Python.

Reach out to me at jnapoli+hn@cvector.com

joshuanapoli··on Show HN: I built a tool to assist AI agents to know when a PR is good to go
This looks nice! I like the idea of providing more deterministic feedback and more or less forcing the assistant to follow a particular development process. Do you have evidence that gtg improves the overall workflow? I think that there is a trade-off between risk of getting stuck (iteration without reaching gtg-green) versus reaching perfect 100% completion.
joshuanapoli··on Tell HN: Merry Christmas
Merry Christmas from Rhode Island!
joshuanapoli··on AWS outage caused by latent race condition in the DynamoDB DNS management system
See discussion on AWS's report here: https://news.ycombinator.com/item?id=45677139
joshuanapoli··on Show HN: I spent 4 months building Duolingo but for your life
Yeah, maybe it would be nice to have a fast-track onboarding option for common goals: lose weight, finish homework or chores, etc.
joshuanapoli··on Show HN: Semantic grep with local embeddings
I don’t think that “Claude Code” is relevant to this semantic grep tool.
joshuanapoli··on 1TB Raspberry Pi SSD on sale now for $70
Yes, this is it. When I'm experimenting, I'm happy to pay an extra $40 for the name-brand device that has 1000s of blog posts supporting it, since it's probably this community is going to help me be more successful and learn faster.

I would reconsider the choice when I have a commercial product that I have some scale of production, where a few bucks off the BOM is important.

joshuanapoli··on Ask HN: Who is hiring? (September 2025)
CVector | Full Stack Software Engineer | USA | REMOTE | Full-time | $75k – $120/yr + 0.3% – 1%

CVector builds software to make energy systems smarter, more reliable, and autonomous. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps and backend systems, shaping tools that directly impact industrial operations and energy reliability.

Remote-first team with occasional domestic travel to connect with users directly. Recent graduates may need to relocate.

Full Stack Software Engineer: We're looking for a passionate Full Stack Software Engineer comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI).

Reach out to me at jnapoli+hn@cvector.energy

joshuanapoli··on It's Beginning to Smell a Lot Like Stagflation
There is now a lot more uncertainty and delay for legal immigrants when crossing into the USA.
joshuanapoli··on Ask HN: Will AI push more of us into freelancing?
For the time being, AI doesn’t have good access to a lot of things: customers, information in 3rd party systems, etc. Even when we give access (with MCP, for example), current AI has trouble locating the right information to solve a problem.

So I still need an engineer to find out why the distributed system isn’t performing correctly, or to create a new component that is coherent with the rest of the existing UI. The difference is that any particular engineer will find more success tackling a wider range of goals.

joshuanapoli··on Ask HN: Who is hiring? (August 2025)
CVector | Full Stack Software Engineer; UI/UX Designer | USA | REMOTE | Full-time | $75k/yr + 0.3% – 1%

CVector builds software to make energy systems smarter, more reliable, and autonomous. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps and backend systems, shaping tools that directly impact industrial operations and energy reliability.

Remote-first team with occasional domestic travel to connect with users directly. Recent graduates may need to relocate.

Full Stack Software Engineer: We're looking for a passionate Full Stack Software Engineer comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, Kafka, TimescaleDB, PostgreSQL, AWS).

UI/UX Designer: Explore the solution space for how users will interact with our app, and help us communicate more clearly with our customers and investors.

Reach out to me at jnapoli+hn@cvector.energy

joshuanapoli··on Ask HN: Will AI push more of us into freelancing?
I think that AI will let us make better progress outside of our narrow expertise.

So entrepreneurial activities will be easier and more common. On the other hand, there will be relatively fewer opportunities for specialized consultants. Contractors and consultants should be able to solve bigger problems rather than working in narrow specialties.

Teams and companies should have fewer members, since fewer specialties are needed. So they will probably need more contractors to move things along when there is a lot of work to do.

joshuanapoli··on Tesla must pay portion of $329M damages after fatal Autopilot crash, jury says
Normally, Autopilot does not require your foot on the accelerator. Pressing the accelerator overrides it to make to car move ahead where the autopilot decided to stop. At the time, autopilot would always stop at an intersection, and the driver was supposed to move ahead when it is clear.
joshuanapoli··on Gemini 2.5 Deep Think
Just put in the prompt customization to model responses on Marvin from Hitchhiker's Guide.

"Here I am, brain the size of a planet, and they ask me to ..."

joshuanapoli··on Ask HN: How did Soham Parekh get so many jobs?
Yep, you are also right.
joshuanapoli··on Ask HN: How did Soham Parekh get so many jobs?
There is obviously some distribution of productivity in software developers. In young startups, a highly productive developer has an outsized impact. A delay in product development can mean the company is entirely blocked from advancing its growth. The cost of a “slow” developer can become the entire burn rate of the company, as everyone waits for X to be finished. A more productive developer has a better chance of staying ahead of the critical path.
joshuanapoli··on Ask HN: Who is hiring? (July 2025)
CVector | Full Stack Software Engineer; UI/UX Designer | USA | REMOTE | Full-time | $75k/yr + 0.3% – 1%

CVector builds software to make energy systems smarter, more reliable, and autonomous. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps and backend systems, shaping tools that directly impact industrial operations and energy reliability.

Remote-first team with occasional domestic travel to connect with users directly. Recent graduates may need to relocate.

Full Stack Software Engineer: We're looking for a passionate Full Stack Software Engineer comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, Kafka, TimescaleDB, PostgreSQL, AWS).

UI/UX Designer: Explore the solution space for how users will interact with our app, and help us communicate more clearly with our customers and investors.

Reach out to me at jnapoli+hn@cvector.energy

joshuanapoli··on Korean students seek 'digital undertakers' amid US visa social media screening
US universities are being punished for allowing free speech of individual members. The federal government is angling to get these groups to self-censor.
joshuanapoli··on CareerBuilder and Monster job boards, file for bankruptcy
On the hiring side, Motion Recruitment had good communication and good results for me. The agent tremendously improves the signal/noise ratio in the beginning of the hiring funnel.
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